Kags7517's Favorite

There’s a Manhwa/Manhua and it went somewhere like this: there’s two childhood friends, the FL(daughter of duke and duchess) who likes the ML(later became emperor), but she could’ve never revealed her feelings because the ML at that time already had a childhood sweetheart. But then the childhood sweetheart of ML was sent to a king of a neighboring country. When the ML was crowned, he married the FL (so the FL became an Empress) but told her to never expect any love from him. FL couldn’t stand the fact that she was in love with him, but it gets worse when the FL had a miscarriage AND the former sweetheart of the ML returned and claimed to bore a “child belonging to” the ML. The FL filed for a divorce and fled.
Please help find the manga!

It's a historical manhwa and the mc is the only princess in her kingdom. She had died multiple times by her brother's hand. When she was 16 she found a book about her future. When she met her brother, she tripped and her dress ripped just like what the book say. The mc have blonde hair and have a scar on her cheek